ingratitude

the state of not feeling or showing that you are grateful for somethingHer help was met with ingratitude and unkindness.oppositegratitudeWord Familygratefuladjective(≠ungrateful)gratefullyadverbgratitudenoun(≠ingratitude)Word OriginMiddle English: from Old French, or from late Latiningratitudo, from Latiningratus